Explain the relationship between tubulin-GTP and tubulin-GDP with respect to MT elongation.

Describe the function of the Bicoid protein. Explain how its ability to exert its effects in a concentration-dependent manner is a critical feature of its function.

Transport of histidine into a bacterial cell was measured at several different histidine concentrations, see table below. Based on these data, is histidine uptake facilitated by a carrier or channel protein? a b Histidine (uM) 2.5 7 16 31 72 с Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. A carrier protein because it becomes saturated. A carrier protein because it does not become saturated. A channel protein because it becomes saturated. Transport (uM/min) d A channel protein because it does not become saturated. 42.5 119 240 490 1000 X Your answer

Explain the factors of aminoacylation of Trna?